// Copyright (c) 2020, Brandon Lehmann
//
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// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
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#ifndef CRYPTO_AUDIT_H
#define CRYPTO_AUDIT_H

#include <types/crypto_point_t.h>
#include <types/crypto_scalar_t.h>

namespace Crypto::Audit
{
    /**
     * Verifies the proof provided using the public ephemerals by decoding the Base58 proof,
     * extracting the key images, and the signatures, and then verifying those signatures if
     * all of the proofs are valid, the key images are returned as well
     *
     * @param public_ephemerals
     * @param proof
     * @return
     */
    std::tuple<bool, std::vector<crypto_key_image_t>>
        check_outputs_proof(const std::vector<crypto_public_key_t> &public_ephemerals, const std::string &proof);

    /**
     * Generates proof of having the secret ephemerals specified by generating the relevant
     * public keys, key images, and signature for each and encoding the necessary information
     * into a Base58 string that can be given to a verifier that already has the public
     * ephemerals
     *
     * @param secret_ephemerals
     * @return
     */
    std::tuple<bool, std::string> generate_outputs_proof(const std::vector<crypto_scalar_t> &secret_ephemerals);
} // namespace Crypto::Audit

#endif